Nutshell Powder‐Based Green Triboelectric Nanogenerator for Wind Energy Harvesting

Abstract

As an agricultural waste, peanut shell powder (PSP) is rich in cellulose and lignin, but its traditional treatment not only has additional disposal costs, but also causes environmental pollution. Here, a low‐cost and environment‐friendly triboelectric nanogenerator based on PSP (PSP‐TENG) is designed for efficient wind energy harvesting. PSP film is used as the tribo‐positive layer, with high surface charge density. The maximum output power density of the PSP‐TENG reaches 365 mW m–2 with a short‐circuit current of 39.4 µA and an open‐circuit voltage of 248.9 V. About 228 commercial LEDs can be lighted up by the wind‐driven PSP‐TENG, which can also be used as a sensor to measure the wind speed. By integrating with capacitor, PSP‐TENG can provide continuous and stable power supply for electronic devices, such as hygrometers, calculators, and stopwatches. Besides, an efficient self‐powered cathodic protection system based on PSP‐TENG is designed for anti‐corrosion for marine pipelines and ships. This work provides a simple and environment‐friendly “waste‐to‐energy technology,” which has a huge application prospect in agricultural waste treatment, new energy, and self‐powered system.

Advanced Triboelectric Applications of Biomass-Derived Materials: A Comprehensive Review

“…This approach seeks to leverage lignin's intrinsic properties by focusing on its ability to generate and transfer charges upon contact and separation with another material. Key to this strategy is the enhancement of the micro-and nano-scale roughness of lignin surfaces [79][80][81], which can lead to an increased contact area and, thus, improved charge generation. Additionally, increasing the hydrophobicity of lignin can play a crucial role in sustaining its triboelectric performance, especially under humid conditions [82].…”

Lignocellulosic Biomass for the Fabrication of Triboelectric Nano-Generators (TENGs)—A Review

“…Zhang et al [91] used peanut and chestnut shells from agricultural waste to construct a stator/rotator system-based TENGs. Agricultural waste such as nutshells is rich in lignin, cellulose, and hemicellulose.…”

Biodegradable Polymers in Triboelectric Nanogenerators

“…Similarly, peanut shell is a common crop waste generally treated as garbage, and occasionally simply burned in production. As a biodegradable material, however, it has certain advantages in developing BD-TENG due to its rich cellulose and lignin ( Figure 3 f) [ 71 ]. Meanwhile, using edible food materials to develop BD-TENG is also a meaningful research direction.…”

“…Reproduced with permission [ 70 ], Copyright 2021, Elsevier Ltd. ( f ) Peanut shell powder used in BD-TENG. Reproduced with permission [ 71 ], Copyright 2022, Wiley & Sons, Ltd.…”